| 摘要 |
<p>PURPOSE:To make it possible to supply hot water stably at a constant temperature and constant pressure such as hot water from a hot spring, water heated by subterranean heat, and industrial hot waste water, by circulating a prescribed amount of hot water and automatically controlling the flow rate control valve of a return pipe to keep the pressure in the pipe constant at all times. CONSTITUTION:In a system comprising a hot water storage tank 1, a circulating pump 3 and a hot water circulating pipeline 5 for circulating hot water to be supplied, a pipeline 5 is divided near to a hot water discharge outlet 6 of the circulating pump 3 into a return pipe 7 and a pipeline for supplying and circulating the hot water, motor- driven flow rate control valves 8, 12 are provided respectively near to an end section 10 of the hot water circulating pipeline 5 to the hot water storage tank 1 and near to the return pipe 7, a pressure detecting apparatus 9 is provided for detecting the pressure in said pipeline for supplying and circulating the hot water, and to make constant the value of the flowmeter 11 located near the end section 10 of the circulating pipe 5 and the pressure in the pipe detected by a pressure detector 9, the motor-driven flow rate control valves 8, 12 are controlled by a control mechanism 13, so that a stabilized quantity of hot water can be supplied to a user.</p> |
